package src.io;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.nio.charset.StandardCharsets;

public class ReadStringDemo {
        public static void main(String[] args) throws IOException {
                File file=new File("fos.dat");
                FileInputStream fis=new FileInputStream(file);
                byte[] data=new byte[(int)file.length()];//创建与文件相同的字节数组
                fis.read(data);//一次性读取数据到data里面
                String line=new String(data, StandardCharsets.UTF_8);
                System.out.println(line);
                fis.close();
        }
}
